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<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the License for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the License.<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    <a name="line.17"></a>
<FONT color="green">018</FONT>    package org.apache.commons.configuration;<a name="line.18"></a>
<FONT color="green">019</FONT>    <a name="line.19"></a>
<FONT color="green">020</FONT>    import java.util.ArrayList;<a name="line.20"></a>
<FONT color="green">021</FONT>    import java.util.Collection;<a name="line.21"></a>
<FONT color="green">022</FONT>    import java.util.Iterator;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.util.LinkedHashMap;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.util.List;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.util.Map;<a name="line.25"></a>
<FONT color="green">026</FONT>    <a name="line.26"></a>
<FONT color="green">027</FONT>    /**<a name="line.27"></a>
<FONT color="green">028</FONT>     * Basic configuration class. Stores the configuration data but does not<a name="line.28"></a>
<FONT color="green">029</FONT>     * provide any load or save functions. If you want to load your Configuration<a name="line.29"></a>
<FONT color="green">030</FONT>     * from a file use PropertiesConfiguration or XmlConfiguration.<a name="line.30"></a>
<FONT color="green">031</FONT>     *<a name="line.31"></a>
<FONT color="green">032</FONT>     * This class extends normal Java properties by adding the possibility<a name="line.32"></a>
<FONT color="green">033</FONT>     * to use the same key many times concatenating the value strings<a name="line.33"></a>
<FONT color="green">034</FONT>     * instead of overwriting them.<a name="line.34"></a>
<FONT color="green">035</FONT>     *<a name="line.35"></a>
<FONT color="green">036</FONT>     * @author &lt;a href="mailto:stefano@apache.org"&gt;Stefano Mazzocchi&lt;/a&gt;<a name="line.36"></a>
<FONT color="green">037</FONT>     * @author &lt;a href="mailto:jon@latchkey.com"&gt;Jon S. Stevens&lt;/a&gt;<a name="line.37"></a>
<FONT color="green">038</FONT>     * @author &lt;a href="mailto:daveb@miceda-data"&gt;Dave Bryson&lt;/a&gt;<a name="line.38"></a>
<FONT color="green">039</FONT>     * @author &lt;a href="mailto:geirm@optonline.net"&gt;Geir Magnusson Jr.&lt;/a&gt;<a name="line.39"></a>
<FONT color="green">040</FONT>     * @author &lt;a href="mailto:leon@opticode.co.za"&gt;Leon Messerschmidt&lt;/a&gt;<a name="line.40"></a>
<FONT color="green">041</FONT>     * @author &lt;a href="mailto:kjohnson@transparent.com"&gt;Kent Johnson&lt;/a&gt;<a name="line.41"></a>
<FONT color="green">042</FONT>     * @author &lt;a href="mailto:dlr@finemaltcoding.com"&gt;Daniel Rall&lt;/a&gt;<a name="line.42"></a>
<FONT color="green">043</FONT>     * @author &lt;a href="mailto:ipriha@surfeu.fi"&gt;Ilkka Priha&lt;/a&gt;<a name="line.43"></a>
<FONT color="green">044</FONT>     * @author &lt;a href="mailto:jvanzyl@apache.org"&gt;Jason van Zyl&lt;/a&gt;<a name="line.44"></a>
<FONT color="green">045</FONT>     * @author &lt;a href="mailto:mpoeschl@marmot.at"&gt;Martin Poeschl&lt;/a&gt;<a name="line.45"></a>
<FONT color="green">046</FONT>     * @author &lt;a href="mailto:hps@intermeta.de"&gt;Henning P. Schmiedehausen&lt;/a&gt;<a name="line.46"></a>
<FONT color="green">047</FONT>     * @author &lt;a href="mailto:ksh@scand.com"&gt;Konstantin Shaposhnikov&lt;/a&gt;<a name="line.47"></a>
<FONT color="green">048</FONT>     * @version $Id: BaseConfiguration.java 1231721 2012-01-15 18:32:07Z oheger $<a name="line.48"></a>
<FONT color="green">049</FONT>     */<a name="line.49"></a>
<FONT color="green">050</FONT>    public class BaseConfiguration extends AbstractConfiguration implements Cloneable<a name="line.50"></a>
<FONT color="green">051</FONT>    {<a name="line.51"></a>
<FONT color="green">052</FONT>        /** stores the configuration key-value pairs */<a name="line.52"></a>
<FONT color="green">053</FONT>        private Map&lt;String, Object&gt; store = new LinkedHashMap&lt;String, Object&gt;();<a name="line.53"></a>
<FONT color="green">054</FONT>    <a name="line.54"></a>
<FONT color="green">055</FONT>        /**<a name="line.55"></a>
<FONT color="green">056</FONT>         * Adds a key/value pair to the map.  This routine does no magic morphing.<a name="line.56"></a>
<FONT color="green">057</FONT>         * It ensures the keylist is maintained<a name="line.57"></a>
<FONT color="green">058</FONT>         *<a name="line.58"></a>
<FONT color="green">059</FONT>         * @param key key to use for mapping<a name="line.59"></a>
<FONT color="green">060</FONT>         * @param value object to store<a name="line.60"></a>
<FONT color="green">061</FONT>         */<a name="line.61"></a>
<FONT color="green">062</FONT>        @Override<a name="line.62"></a>
<FONT color="green">063</FONT>        protected void addPropertyDirect(String key, Object value)<a name="line.63"></a>
<FONT color="green">064</FONT>        {<a name="line.64"></a>
<FONT color="green">065</FONT>            Object previousValue = getProperty(key);<a name="line.65"></a>
<FONT color="green">066</FONT>    <a name="line.66"></a>
<FONT color="green">067</FONT>            if (previousValue == null)<a name="line.67"></a>
<FONT color="green">068</FONT>            {<a name="line.68"></a>
<FONT color="green">069</FONT>                store.put(key, value);<a name="line.69"></a>
<FONT color="green">070</FONT>            }<a name="line.70"></a>
<FONT color="green">071</FONT>            else if (previousValue instanceof List)<a name="line.71"></a>
<FONT color="green">072</FONT>            {<a name="line.72"></a>
<FONT color="green">073</FONT>                // safe to case because we have created the lists ourselves<a name="line.73"></a>
<FONT color="green">074</FONT>                @SuppressWarnings("unchecked")<a name="line.74"></a>
<FONT color="green">075</FONT>                List&lt;Object&gt; valueList = (List&lt;Object&gt;) previousValue;<a name="line.75"></a>
<FONT color="green">076</FONT>                // the value is added to the existing list<a name="line.76"></a>
<FONT color="green">077</FONT>                valueList.add(value);<a name="line.77"></a>
<FONT color="green">078</FONT>            }<a name="line.78"></a>
<FONT color="green">079</FONT>            else<a name="line.79"></a>
<FONT color="green">080</FONT>            {<a name="line.80"></a>
<FONT color="green">081</FONT>                // the previous value is replaced by a list containing the previous value and the new value<a name="line.81"></a>
<FONT color="green">082</FONT>                List&lt;Object&gt; list = new ArrayList&lt;Object&gt;();<a name="line.82"></a>
<FONT color="green">083</FONT>                list.add(previousValue);<a name="line.83"></a>
<FONT color="green">084</FONT>                list.add(value);<a name="line.84"></a>
<FONT color="green">085</FONT>    <a name="line.85"></a>
<FONT color="green">086</FONT>                store.put(key, list);<a name="line.86"></a>
<FONT color="green">087</FONT>            }<a name="line.87"></a>
<FONT color="green">088</FONT>        }<a name="line.88"></a>
<FONT color="green">089</FONT>    <a name="line.89"></a>
<FONT color="green">090</FONT>        /**<a name="line.90"></a>
<FONT color="green">091</FONT>         * Read property from underlying map.<a name="line.91"></a>
<FONT color="green">092</FONT>         *<a name="line.92"></a>
<FONT color="green">093</FONT>         * @param key key to use for mapping<a name="line.93"></a>
<FONT color="green">094</FONT>         *<a name="line.94"></a>
<FONT color="green">095</FONT>         * @return object associated with the given configuration key.<a name="line.95"></a>
<FONT color="green">096</FONT>         */<a name="line.96"></a>
<FONT color="green">097</FONT>        public Object getProperty(String key)<a name="line.97"></a>
<FONT color="green">098</FONT>        {<a name="line.98"></a>
<FONT color="green">099</FONT>            return store.get(key);<a name="line.99"></a>
<FONT color="green">100</FONT>        }<a name="line.100"></a>
<FONT color="green">101</FONT>    <a name="line.101"></a>
<FONT color="green">102</FONT>        /**<a name="line.102"></a>
<FONT color="green">103</FONT>         * Check if the configuration is empty<a name="line.103"></a>
<FONT color="green">104</FONT>         *<a name="line.104"></a>
<FONT color="green">105</FONT>         * @return {@code true} if Configuration is empty,<a name="line.105"></a>
<FONT color="green">106</FONT>         * {@code false} otherwise.<a name="line.106"></a>
<FONT color="green">107</FONT>         */<a name="line.107"></a>
<FONT color="green">108</FONT>        public boolean isEmpty()<a name="line.108"></a>
<FONT color="green">109</FONT>        {<a name="line.109"></a>
<FONT color="green">110</FONT>            return store.isEmpty();<a name="line.110"></a>
<FONT color="green">111</FONT>        }<a name="line.111"></a>
<FONT color="green">112</FONT>    <a name="line.112"></a>
<FONT color="green">113</FONT>        /**<a name="line.113"></a>
<FONT color="green">114</FONT>         * check if the configuration contains the key<a name="line.114"></a>
<FONT color="green">115</FONT>         *<a name="line.115"></a>
<FONT color="green">116</FONT>         * @param key the configuration key<a name="line.116"></a>
<FONT color="green">117</FONT>         *<a name="line.117"></a>
<FONT color="green">118</FONT>         * @return {@code true} if Configuration contain given key,<a name="line.118"></a>
<FONT color="green">119</FONT>         * {@code false} otherwise.<a name="line.119"></a>
<FONT color="green">120</FONT>         */<a name="line.120"></a>
<FONT color="green">121</FONT>        public boolean containsKey(String key)<a name="line.121"></a>
<FONT color="green">122</FONT>        {<a name="line.122"></a>
<FONT color="green">123</FONT>            return store.containsKey(key);<a name="line.123"></a>
<FONT color="green">124</FONT>        }<a name="line.124"></a>
<FONT color="green">125</FONT>    <a name="line.125"></a>
<FONT color="green">126</FONT>        /**<a name="line.126"></a>
<FONT color="green">127</FONT>         * Clear a property in the configuration.<a name="line.127"></a>
<FONT color="green">128</FONT>         *<a name="line.128"></a>
<FONT color="green">129</FONT>         * @param key the key to remove along with corresponding value.<a name="line.129"></a>
<FONT color="green">130</FONT>         */<a name="line.130"></a>
<FONT color="green">131</FONT>        @Override<a name="line.131"></a>
<FONT color="green">132</FONT>        protected void clearPropertyDirect(String key)<a name="line.132"></a>
<FONT color="green">133</FONT>        {<a name="line.133"></a>
<FONT color="green">134</FONT>            if (containsKey(key))<a name="line.134"></a>
<FONT color="green">135</FONT>            {<a name="line.135"></a>
<FONT color="green">136</FONT>                store.remove(key);<a name="line.136"></a>
<FONT color="green">137</FONT>            }<a name="line.137"></a>
<FONT color="green">138</FONT>        }<a name="line.138"></a>
<FONT color="green">139</FONT>    <a name="line.139"></a>
<FONT color="green">140</FONT>        @Override<a name="line.140"></a>
<FONT color="green">141</FONT>        public void clear()<a name="line.141"></a>
<FONT color="green">142</FONT>        {<a name="line.142"></a>
<FONT color="green">143</FONT>            fireEvent(EVENT_CLEAR, null, null, true);<a name="line.143"></a>
<FONT color="green">144</FONT>            store.clear();<a name="line.144"></a>
<FONT color="green">145</FONT>            fireEvent(EVENT_CLEAR, null, null, false);<a name="line.145"></a>
<FONT color="green">146</FONT>        }<a name="line.146"></a>
<FONT color="green">147</FONT>    <a name="line.147"></a>
<FONT color="green">148</FONT>        /**<a name="line.148"></a>
<FONT color="green">149</FONT>         * Get the list of the keys contained in the configuration<a name="line.149"></a>
<FONT color="green">150</FONT>         * repository.<a name="line.150"></a>
<FONT color="green">151</FONT>         *<a name="line.151"></a>
<FONT color="green">152</FONT>         * @return An Iterator.<a name="line.152"></a>
<FONT color="green">153</FONT>         */<a name="line.153"></a>
<FONT color="green">154</FONT>        public Iterator&lt;String&gt; getKeys()<a name="line.154"></a>
<FONT color="green">155</FONT>        {<a name="line.155"></a>
<FONT color="green">156</FONT>            return store.keySet().iterator();<a name="line.156"></a>
<FONT color="green">157</FONT>        }<a name="line.157"></a>
<FONT color="green">158</FONT>    <a name="line.158"></a>
<FONT color="green">159</FONT>        /**<a name="line.159"></a>
<FONT color="green">160</FONT>         * Creates a copy of this object. This implementation will create a deep<a name="line.160"></a>
<FONT color="green">161</FONT>         * clone, i.e. the map that stores the properties is cloned, too. So changes<a name="line.161"></a>
<FONT color="green">162</FONT>         * performed at the copy won't affect the original and vice versa.<a name="line.162"></a>
<FONT color="green">163</FONT>         *<a name="line.163"></a>
<FONT color="green">164</FONT>         * @return the copy<a name="line.164"></a>
<FONT color="green">165</FONT>         * @since 1.3<a name="line.165"></a>
<FONT color="green">166</FONT>         */<a name="line.166"></a>
<FONT color="green">167</FONT>        @Override<a name="line.167"></a>
<FONT color="green">168</FONT>        public Object clone()<a name="line.168"></a>
<FONT color="green">169</FONT>        {<a name="line.169"></a>
<FONT color="green">170</FONT>            try<a name="line.170"></a>
<FONT color="green">171</FONT>            {<a name="line.171"></a>
<FONT color="green">172</FONT>                BaseConfiguration copy = (BaseConfiguration) super.clone();<a name="line.172"></a>
<FONT color="green">173</FONT>                // This is safe because the type of the map is known<a name="line.173"></a>
<FONT color="green">174</FONT>                @SuppressWarnings("unchecked")<a name="line.174"></a>
<FONT color="green">175</FONT>                Map&lt;String, Object&gt; clonedStore = (Map&lt;String, Object&gt;) ConfigurationUtils.clone(store);<a name="line.175"></a>
<FONT color="green">176</FONT>                copy.store = clonedStore;<a name="line.176"></a>
<FONT color="green">177</FONT>    <a name="line.177"></a>
<FONT color="green">178</FONT>                // Handle collections in the map; they have to be cloned, too<a name="line.178"></a>
<FONT color="green">179</FONT>                for (Map.Entry&lt;String, Object&gt; e : store.entrySet())<a name="line.179"></a>
<FONT color="green">180</FONT>                {<a name="line.180"></a>
<FONT color="green">181</FONT>                    if (e.getValue() instanceof Collection)<a name="line.181"></a>
<FONT color="green">182</FONT>                    {<a name="line.182"></a>
<FONT color="green">183</FONT>                        // This is safe because the collections were created by ourselves<a name="line.183"></a>
<FONT color="green">184</FONT>                        @SuppressWarnings("unchecked")<a name="line.184"></a>
<FONT color="green">185</FONT>                        Collection&lt;String&gt; strList = (Collection&lt;String&gt;) e.getValue();<a name="line.185"></a>
<FONT color="green">186</FONT>                        copy.store.put(e.getKey(), new ArrayList&lt;String&gt;(strList));<a name="line.186"></a>
<FONT color="green">187</FONT>                    }<a name="line.187"></a>
<FONT color="green">188</FONT>                }<a name="line.188"></a>
<FONT color="green">189</FONT>    <a name="line.189"></a>
<FONT color="green">190</FONT>                return copy;<a name="line.190"></a>
<FONT color="green">191</FONT>            }<a name="line.191"></a>
<FONT color="green">192</FONT>            catch (CloneNotSupportedException cex)<a name="line.192"></a>
<FONT color="green">193</FONT>            {<a name="line.193"></a>
<FONT color="green">194</FONT>                // should not happen<a name="line.194"></a>
<FONT color="green">195</FONT>                throw new ConfigurationRuntimeException(cex);<a name="line.195"></a>
<FONT color="green">196</FONT>            }<a name="line.196"></a>
<FONT color="green">197</FONT>        }<a name="line.197"></a>
<FONT color="green">198</FONT>    }<a name="line.198"></a>




























































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